Meteoritical Bulletin: Entry for Northwest Africa 2372

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Northwest Africa 2372

Basic information

Name: Northwest Africa 2372
This is an OFFICIAL meteorite name.
Abbreviation: NWA 2372
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass: 440 g

Classification
history:

Meteoritical Bulletin:	MB 89	(2005)	CK4
MetBase:	v. 7.1	(2006)	CK4
Recommended:			CK4 [explanation]

This is 1 of 121 approved meteorites classified as CK4. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites

Writeup

Writeup from MB 89:

Northwest Africa 2372

Northwest Africa

Found 2004

Carbonaceous chondrite (CK4)

A 440 g single, brownish stone was purchased in Erfoud, Morocco in May 2004. Description and classification (T. Bunch and J. Wittke, NAU): contains ~ 33 vol. % chondrules that are typically smaller than most CK meteorites (<1 mm diameter), abundant melilite–spinel CAIs rimmed by subcalcic augite, and partially rcrystallized matrix. Matrix olivine, Fa _29.5–34.2, FeO/MnO = 30.8–37.8, NiO = 0.35 ± 0.12 %; low–Ca pyroxene, Fs_25.3–29.0Wo_0.9–5.3, FeO/MnO = 25.3–29.0; plagioclase, An_36.8–51.2 Or_1.7–3.0; magnetite, Cr₂O₃, = 5.3 wt %, Al₂O₃, 5.3 wt %, TiO₂ = 1.97 wt %, NiO = 0.27 ± 0.1 %, troilite, and Fe-, Mg-rich feldspathic glass. A portion of the glass has been replaced by terrestrial carbonate. Shock level is S2, weathering grade, W3. Specimens: type specimen, 23 g, NAU; main mass. Reed.

Data from:
  MB89
  Table 7
  Line 213:

Place of purchase:	Erfoud
Date:	2004
Mass (g):	440
Pieces:	1
Class:	CK4
Shock stage:	S2
Classifier:	Ted Bunch, NAU
Type spec mass (g):	28
Type spec location:	NAU
Main mass:	Reed

Institutions
and collections

NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
Reed: Blaine Reed, P.O. Box 1141, Delta, CO 81416, United States; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
bphd
Gerald Armstrong

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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